23980-B-K-MB-C5 Double Row Spherical Roller Bearings, Main Dimensions To DIN 635-2

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23980-B-K-MB-C5

Bore Diameter:400 mm

Outside Diameter:540 mm

Width:106 mm

Weight:69.35 kg

Min. Order:1 Piece

The 23980-B-K-MB-C5 Double-row spherical roller bearings are suitable for heavy-load, impact, and eccentric conditions. Classic applications include vibrating screen exciters, crushers, fans, paper machine press rolls, mining conveyor equipment, and marine propulsion shafts.

The 23980-B-K-MB-C5 bearing is a Double row spherical roller bearings, main dimensions to DIN 635-2 with an inner diameter of 400 mm , an outer diameter of 540 mm, a width of 106 mm. GCr15, GCr15SiMn, SUJ2 rings, GCr15, SUJ2 rolling mlement. Its dynamic radial rated load is approximately 1829837 N, its static radial rated load is approximately 4149812 N. It uses C5 standard radial clearance, OPEN type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.

Dimensions:

Inside Diameter:

400 mm

Outside Diameter:

540 mm

Thickness:

106 mm

Weight:

69.35 KG

Performance Data:

Dynamic load Capacity, Radial (Cr):

1829837 N

Static load Capacity, Radial (Cor):

4149812 N

Fatigue Load Limit, Radial:

279932 N

Reference speed (Grease rpm):

690

Limiting speed (Oil rpm):

1270

Specifications:

Old Designations:

23980BK.MB.C5

Structure:

Spherical Roller Bearings

Number of Rows:

Radial Clearance Trade No.:

Bearing Material:

GCr15, GCr15SiMn, SUJ2

Cage Type:

MB = Solid brass cage, guided on inner ring

Seals Type:

OPEN

Rolling Mlement Material:

GCr15, SUJ2

Bore Type:

K = Tapered bore (taper 1:12)

Operating Temperature:

-30 to +200 °C

System of Measurement:

Metric

Series:

239..-K

Rolling Element:

symmetrical rollers

Transaction Information:

Transport Package:

Standard Export Package

Service:

7*24 hour

Shipping Ways:

by Sea or Air

Country of Origin:

china

Stock:

10 Piece

Port:

Tianjin, Shanghai, Shenzhen, Guangzhou or Qingdao

Payment term:

by T/T in advance

Delivery time:

2-3 days for stock, 25-30 days for bulk production

Detailed description

23980-B-K-MB-C5 bearings ( 400 mm x 540 mm x 106 mm) have the advantages of Self-aligning, extremely high load-bearing capacity, thinnest cross-section, low friction, suitable for confined spaces, and are therefore widely used in the Large crushers, mills, and rotary kilns.

Part Number	23980-B-K-MB-C5
Design Type	B = with fixed central rib
Bore Type	K = Tapered bore (taper 1:12)
RIC	C5
Row	2
Adapter sleeve	H3980-HG
Bearing Type	Double row spherical roller bearings, main dimensions to DIN 635-2
Manufacturer Part Code	23980BK.MB.C5
Withdrawal sleeve	AH3980G-H
Cage	MB = Solid brass cage, guided on inner ring
Measurement	Metric
Seal type	OPEN
Relubrication	Standard
d φ Inside [inch]	15.748
D Φ Outside [inch]	21.260
B Width [inch]	4.173
n_B Reference speed (grease) [min^–1]	690
n_G Limiting speed (oil) [min^–1]	1270
Weight [kg]	69.35
r(min.) Chamfer [inch]	0.157
D₁ [inch]	19.646
d_s [inch]	0.374
n_s [inch]	0.697
C_r Radial Dynamic [lbf]	411347
C_0r Radial static [lbf]	932877
C_ur Radial Fatigue [lbf]	62928
Temperature - T(min)[°C]	-30
Temperature - T(max)[°C]	+200
Mounting dimensions
d_a(min.) [inch]	16.323
d_a(max.) [inch]	17.126
D_a(max.) [inch]	20.685
d_b(min.) [inch]	16.260
B_a(min.) [inch]	0.591
r_a(max.) [mm]	69.35
Calculation coefficient
e	0.18
Y₀	3.63
Y₁	3.71
Y₂	5.52

The 23980-B-K-MB-C5 Double-row spherical roller bearings mainly consist of an inner ring, an outer ring, two rows of spherical rollers, a cage, and seals. The outer ring raceway has a spherical structure, while the inner ring has a double-row raceway. The rollers and raceways are logarithmically curved. The cage is typically made of stamped steel or machined brass.

Double-row spherical roller bearings possess excellent self-aligning properties, compensating for shaft deflection, installation errors, and misalignment. They can simultaneously withstand radial loads and bidirectional axial loads, exhibiting extremely high load-bearing capacity and strong impact resistance. Furthermore, the internal clearance can be optimized for vibration conditions, effectively reducing frictional temperature rise.

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23980-B-K-MB-C5 Double Row Spherical Roller Bearings, Main Dimensions To DIN 635-2

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